Forced Cooling Operation; Compressor Stop Control - Fujitsu AU G18LVLB Series Service Instruction

4. COOLI N G PRESSURE OVERRI S E PROTECTI O N
When the outdoor unit heat exchange sensor temperature rises to
the compressor is stopped and trouble display is performed.
5. HI G H TEMPERATURE RELEASE CONTROL ( HEATI N G MODE )
On heating mode, the compressor frequency is controlled as following based on the
detection value of the indoor heat exchanger temperature sensor.
(Fig.18 : Heating Overload Protection Control)
Indoor heat exchange
temperature
63°C
The compressor frequency is
decreased 25rps every 120 seconds.
55°C
The compressor frequency is
decreased 3rps every 60 seconds.
53°C
50°C
1-25. FORCED COOLI N G OPERATI O N
The forced cooling operation starts up when MANUAL / AUTO button is pressed more than 10 seconds.
During the forced cooling operation, it keeps operation regardless of detection value of room temperature sensor.
Operation LED and Timer LED light up while the unit is on the forced cooling operation.
The forced cooling operation is released after 60 minutes from starting time.

1-26. COMPRESSOR STOP CONTROL

When the detection value of outdoor temperature sensor is lower than temperature
in the table below, the compressor is stopped.
(Table 17 : Operation temperature of compressor stop control)
Operation
temperature
Compressor is OFF
Release Stable range
Release
Temperature
Cooling Heating
- 20°C
65°C or greater,
01-24